API 5L GRb Lsaw Steel Pipe: It is a spiral seam steel pipe welded by the double-wire double-side submerged arc welding process, which takes the strip coil as the raw material and is often warm extruded. Submerged arc welded pipe features: straight seam welded pipe production process is simple, high production efficiency, low cost, rapid development. Spiral welded pipe strength is generally higher than the straight seam welded pipe can be used to produce a larger blank diameter pipe larger pipe can also use the same width of the diameter of the pipe production of different pipe.
Lsaw Steel Pipewall thickness classification table
| Inch | inch sizc | OD | Wall Thickness Standard | ||||||||||||||
| SCH 5s | SCH 10S | SCH 10 | SCH 20 | SCH 30 | SCH 40 | SCH 60 | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | STD | XS | XXS | |||
| 1/8 | DN6 | 10.3 | - | 1.24 | - | - | - | 1.73 | - | 2.42 | - | - | - | - | 1.73 | 2.41 | - |
| 1/4 | DN8 | 13.7 | - | 1.65 | - | - | - | 2.24 | - | 3.02 | - | - | - | - | 2.24 | 3.02 | - |
| 3/8 | DN10 | 17.1 | - | 1.65 | - | - | - | 2.31 | - | 3.2 | - | - | - | - | 2.31 | 3.20 | - |
| 1/2 | DN15 | 21.3 | 1.65 | 2.11 | - | - | - | 2.77 | - | 3.73 | - | - | - | 4.78 | 2.77 | 3.73 | 7.47 |
| 3/4 | DN20 | 26.7 | 1.65 | 2.11 | - | - | - | 2.87 | - | 3.91 | - | - | - | 5.56 | 2.87 | 3.91 | 7.82 |
| 1 | DN25 | 33.4 | 1.65 | 2.77 | - | - | - | 3.38 | - | 4.55 | - | - | - | 6.35 | 3.38 | 4.55 | 9.09 |
| 1-1/4 | DN32 | 42.2 | 1.65 | 2.77 | - | - | - | 3.56 | - | 4.85 | - | - | - | 6.35 | 3.58 | 4.85 | 9.70 |
| 1-1/2 | DN40 | 48.3 | 1.65 | 2.77 | - | - | - | 3.68 | - | 5.05 | - | - | - | 7.14 | 3.68 | 5.08 | 10.15 |
| 2 | DN50 | 60.3 | 1.65 | 2.77 | - | - | - | 3.91 | - | 5.54 | - | - | - | 8.74 | 3.91 | 5.54 | 11.07 |
| 2-1/2 | DN65 | 73.0 | 2.11 | 3.05 | - | - | - | 5.16 | - | 7.01 | - | - | - | 9.53 | 5.16 | 7.01 | 14.02 |
| 3 | DN80 | 88.9 | 2.11 | 3.05 | - | - | - | 5.49 | - | 7.62 | - | - | - | 11.13 | 5.49 | 7.52 | 15.24 |
| 3-1/2 | DN90 | 101.6 | 2.11 | 3.05 | - | - | - | 5.74 | - | 8.08 | - | - | - | - | 5.74 | 8.08 | - |
| 4 | DN100 | 114.3 | 2.11 | 3.05 | - | - | - | 6.02 | - | 8.58 | - | 11.13 | - | 13.49 | 6.02 | 8.56 | 17.12 |
| 5 | DN125 | 141.3 | 2.77 | 3.4 | - | - | - | 6.55 | - | 9.53 | - | 12.70 | - | 15.88 | 6.55 | 9.53 | 18.05 |
| 6 | DN150 | 168.3 | 2.77 | 3.4 | - | - | - | 7.11 | - | 10.97 | - | 14.27 | - | 18.26 | 7.11 | 10.97 | 21.95 |
| 8 | DN200 | 219.1 | 2.77 | 3.76 | - | 6.35 | 7.04 | 8.18 | 10.31 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.70 | 22.23 |
| 10 | DN250 | 273.1 | 3.40 | 4.19 | - | 6.35 | 7.8 | 9.27 | 12.70 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.70 | 25.40 |
| 12 | DN300 | 323.9 | 3.96 | 4.57 | - | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.35 | 12.70 | 25.40 |
| 14 | DN350 | 355.6 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.70 | - |
| 16 | DN400 | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.70 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.70 | - |
| 18 | DN450 | 457 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 29.36 | 34.93 | 39.67 | 45.24 | 9.53 | 12.70 | - |
| 20 | DN500 | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.70 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | 9.53 | 12.70 | - |
| 22 | DN550 | 559 | 4.78 | 5.54 | 6.35 | 9.53 | 12.70 | - | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | 9.53 | 12.70 | - |
| 24 | DN600 | 610 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | 9.53 | 12.70 | - |
| 26 | DN650 | 660 | - | - | 7.92 | 12.7 | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 28 | DN700 | 711 | - | - | 7.92 | 12.7 | 15.88 | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 30 | DN750 | 762 | 6.35 | 7.92 | 7.92 | 12.7 | 15.88 | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 32 | DN800 | 813 | - | - | 7.92 | 12.7 | 15.88 | 17.48 | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 34 | DN850 | 864 | - | - | 7.92 | 12.7 | 15.88 | 17.48 | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 36 | DN900 | 914 | - | - | 7.92 | 12.7 | 15.88 | 19.05 | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 38 | DN950 | 965 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 40 | DN1000 | 1015 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 42 | DN1050 | 1067 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 44 | DN1100 | 1118 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 46 | DN1150 | 1188 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
| 48 | DN1200 | 1219 | - | - | - | - | - | - | - | - | - | - | - | - | 9.53 | 12.70 | - |
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Lsaw Steel Pipe Production Process
SAW double-sided submerged arc welded pipe refers to the work in different environments to ensure that the work of double-sided submerged arc tube temperature and surface temperature at the same time to slow down or prevent the external chemical, electrochemical or by microbial metabolic activity Erosion and deterioration of the insulation and anti-corrosion measures.
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Production Process